897961653 has 32 divisors (see below), whose sum is σ = 1390510080. Its totient is φ = 571641840.

The previous prime is 897961627. The next prime is 897961681. The reversal of 897961653 is 356169798.

It is not a de Polignac number, because 897961653 - 2⁸ = 897961397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 897961653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897961153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 609708 + ... + 611178.

It is an arithmetic number, because the mean of its divisors is an integer number (43453440).

Almost surely, 2^897961653 is an apocalyptic number.

It is an amenable number.

897961653 is a deficient number, since it is larger than the sum of its proper divisors (492548427).

897961653 is a wasteful number, since it uses less digits than its factorization.

897961653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486 (or 2480 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 897961653 is about 29966.0082927306. The cubic root of 897961653 is about 964.7599438674.

The spelling of 897961653 in words is "eight hundred ninety-seven million, nine hundred sixty-one thousand, six hundred fifty-three".